Here are the sources for our information:

"The Black Death." LiveBinders. Web. 13 Oct. 2011. <http://livebinders.com/play/play_or_edit?id=90633>.
"The Colombian Exchange." Tennessee Tech. Web. 13 Oct. 2011. <http://iweb.tntech.edu/kosburn/history-201/the%20Columbian%20Exchange.htm>.
"Disease." Wikipedia, the Free Encyclopedia. Web. 13 Oct. 2011. <http://en.wikipedia.org/wiki/Disease>.
"Disease." Wikipedia, the Free Encyclopedia. Web. 13 Oct. 2011. <http://en.wikipedia.org/wiki/Disease>.
"Infection." Wikipedia, the Free Encyclopedia. Web. 13 Oct. 2011. <http://en.wikipedia.org/wiki/Infection>.
Knox, E.L. Skip. "The Black Death." The Black Death. Boise State University. Web. 13 Oct. 2011. <http://boisestate.edu/courses/westciv/plague/07.shtml>.
Nunn, Nathan, and Nancy Qain. "The Columbian Exchange: A History of Disease, Food, and Idea." Journal of Economic Perspectives 24.2 (2010): 163-88. Harvard. Web. 13 Oct. 2011. <http://www.economics.harvard.edu/faculty/nunn/files/Nunn_Qian_JEP_2010.pdf>.
"Pandemic." Wikipedia, the Free Encyclopedia. Web. 13 Oct. 2011. <http://en.wikipedia.org/wiki/Pandemic>.
"Plague (disease)." Wikipedia, the Free Encyclopedia. Web. 13 Oct. 2011. <http://en.wikipedia.org/wiki/Plague_(disease)>.
"Spread of the Black Death Interactive Map." Wadsworth. Web. 13 Oct. 2011. <http://www.wadsworth.com/history_d/templates/student_resources/0534627218_spielvogel/spielvogel_maps/swfs/map11_1.html>.
Wheeler, Dr. K. "The Black Plague: "The Least You Need To Know"" Carson-Newman College. Web. 13 Oct. 2011. <http://web.cn.edu/kwheeler/documents/Black_Plague.pdf>.